CN104135741B - Method, bluetooth equipment and the system of Bluetooth Low Energy communication - Google Patents
Method, bluetooth equipment and the system of Bluetooth Low Energy communication Download PDFInfo
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- CN104135741B CN104135741B CN201410322708.9A CN201410322708A CN104135741B CN 104135741 B CN104135741 B CN 104135741B CN 201410322708 A CN201410322708 A CN 201410322708A CN 104135741 B CN104135741 B CN 104135741B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides method, bluetooth equipment and the system of Bluetooth Low Energy communication, and wherein method includes the following steps：First bluetooth equipment detects the current signal strength values of the second bluetooth equipment, and preferred transmission rate value is selected according to the signal strength values to prestore and the correspondence of preferred transmission rate value, and the transmission of data packet is carried out using selected preferred transmission rate value.The present invention selects the transmission of different preferred transmission rate value progress data packets according to different signal strength values, it avoids when signal strength values are too strong, the situation of the waste of the communication resource and the time of consumption length are caused with the transmission of relatively low rate progress data packet, it also avoids simultaneously when signal strength values are too weak, the loss of data packet is caused with higher rate sending data packet, can not normal communication, ultimately cause the situation of the decline of traffic rate.
Description
Technical field
The present invention relates to technical field of bluetooth communication more particularly to the method for Bluetooth Low Energy communication, bluetooth equipment and it is
System.
Background technology
Bluetooth low energy consumption (Bluetooth Low Energy, abbreviation BLE) technology is low cost, short distance, interoperable
Robustness wireless technology, which is a key function of Bluetooth4.0, be operated in exempt from license 2.4GHz ISM
Radio frequency band.It is designed as super low-power consumption (ULP) wireless technology from the beginning.It enables many intelligent means can be to the maximum extent
Reduce power consumption.
Bluetooth low energy consumption technologies use variable Connection Time interval, this interval could be provided as several millis according to concrete application
Second was differed by several seconds.In addition, because BLE technologies use very quick connection mode, therefore usually may be at " disconnected "
State (saves the energy), and both link ends only know other side each other at this time, only just open link if necessary, then to the greatest extent
Link is closed in time that may be short.
The operating mode of BLE technologies is highly suitable for from micro wireless sensor (exchanging a data in every half second) or makes
Other peripheral hardware transmission data such as the remote controler with completely asynchronous communication.The data volume that these equipment are sent is considerably less (usually several
Byte), and transmission times also seldom (such as it is per second arrive several times once every minute in addition less).
Existing mobile equipment (such as Android device and ios device) both increases the support to Bluetooth Low Energy technology, leads to
It crosses Bluetooth Low Energy technology and realizes data interaction, but in the implementation of the present invention, inventor has found to deposit in the prior art
In following problem：Bluetooth Low Energy data transmission is slow, and speed is transmitting million grades of byte-sizeds in 0.5KB/s or so, inefficiency
Data volume when, transmission consumption time need dozens of minutes, can not meet larger data amount communication rapid response to customer's need.
Invention content
For this reason, it may be necessary to provide the technical solution of Bluetooth Low Energy communication, it is slow to solve existing Bluetooth Low Energy transmission speed, passes
The problem of defeated efficiency is low.
To achieve the above object, a kind of method of Bluetooth Low Energy communication is inventor provided, is set applied to the first bluetooth
Standby and the second bluetooth devices, realization method are as follows：
Include the following steps：First bluetooth equipment detects the current signal strength values of the second bluetooth equipment, according to what is prestored
Signal strength values and the correspondence of preferred transmission rate value select preferred transmission rate value, use selected preferred transmission rate value
Carry out the transmission of data packet.
Further, the signal strength values and the correspondence of preferred transmission rate value are to obtain as follows
's：
First bluetooth equipment sends communications test data packet with the desired transmission rate to prestore, and the second bluetooth equipment receives
The length value for receiving test data bag is returned to after communications test data packet to the first bluetooth equipment, the first bluetooth equipment passes ideal
Defeated rate multiplies except the length in communications test data packet is worth to actual transfer rate after the length value for receiving test data bag,
The correspondence for then recording current signal strength value and actual transfer rate is signal strength values and pair of preferred transmission rate value
It should be related to.
Further, the first bluetooth equipment using the transmission that selected preferred transmission rate value carries out data packet specifically include as
Lower step：
Data packet is averagely split into multiple data blocks by the first bluetooth equipment, wherein each data block is both less than or equal to the
The maximum transmission unit value of one bluetooth equipment, and individual data block byte is removed and obtains sending interval in selected preferred transmission rate
Time, the first bluetooth equipment are all separated by a transmission interval time in the transmission time started for sending adjacent data block, until
All data blocks are sent.
Further, following steps are further included：First bluetooth equipment carries out data packet using selected preferred transmission rate value
During transmission, the first bluetooth equipment detects the signal strength values of the second bluetooth equipment, and according to the signal strength values to prestore
With the correspondence of preferred transmission rate value, update and select preferred transmission rate value.
Further, correspondence aligning step is further included：Second bluetooth equipment is in the number for receiving the first bluetooth equipment
After packet, reply receives data packet length to the first bluetooth equipment, and the first bluetooth equipment is judging that receiving data packet length is less than
During the data packet length that the first bluetooth equipment is sent, the first bluetooth equipment multiplies selected preferred transmission rate value in receiving data packet
Length value after remove and be worth to correction transmission rate value in the length of data packet, then by signal strength values current in correspondence
Corresponding preferred transmission rate value replaces with correction transmission rate value.
Further, it further includes and replys response bag step：Second bluetooth equipment sends response bag to the first bluetooth equipment, institute
The data packet or response bag stated include following information：Packet type information, packet serial number information, packet check information, packet start information, packet
Termination message or bag data information.
Further, the signal strength values and the correspondence of preferred transmission rate value are including signal strength values and preferably
The direct corresponding data or signal strength values of transmission rate value and the calculated relationship of preferred transmission rate value.
For above method when being respectively used to the first bluetooth equipment and the second bluetooth equipment, the bluetooth of the first bluetooth equipment is low
The method of power communications includes the following steps：The current signal strength values of the bluetooth equipment to communicate with this equipment are detected, according to pre-
The signal strength values deposited and the correspondence of preferred transmission rate value select preferred transmission rate value, use selected preferred transmission speed
Rate value carries out the transmission of data packet.
Further, the signal strength values and the correspondence of preferred transmission rate value are to obtain as follows
's：
Communications test data packet is sent with the desired transmission rate that prestores, is receiving the bluetooth equipment that communicates with this equipment
After returning to the length value for receiving test data bag, it would be desirable to which transmission rate, which multiplies, to be removed after the length value for receiving test data bag in logical
The length of letter test data bag is worth to actual transfer rate, then it is corresponding with actual transfer rate to record current signal strength value
Relationship is signal strength values and the correspondence of preferred transmission rate value.
Further, the transmission for carrying out data packet using selected preferred transmission rate value specifically comprises the following steps：
Data packet is averagely split into multiple data blocks, wherein each data block is both less than or is passed equal to the maximum of this equipment
Defeated cell value, and individual data block byte is removed and obtains sending interval time in selected preferred transmission rate, it is adjacent sending
The transmission time started of data block is all separated by a transmission interval time, until all data blocks are sent.
Further, following steps are further included：During data packet transmission being carried out using selected preferred transmission rate value,
The signal strength values of bluetooth equipment to communicate with this equipment are detected, and according to the signal strength values to prestore and preferred transmission rate value
Correspondence, update select preferred transmission rate value.
Further, correspondence aligning step is further included：Receiving what the bluetooth equipment that communicates with this equipment was replied
After receiving data packet length, when judging that receiving data packet length is less than the data packet length sent, speed is preferably sent by selected
Rate value multiplies except the length of the data packet in transmission is worth to correction transmission rate value after the length value for receiving data packet, then will be right
Preferred transmission rate value in should being related to corresponding to current signal strength values replaces with correction transmission rate value.
Further, the data packet includes following information：Packet type information, packet serial number information, packet check information, packet
Start information, packet termination message or bag data information.
Further, the signal strength values and the correspondence of preferred transmission rate value are including signal strength values and preferably
The direct corresponding data or signal strength values of transmission rate value and the calculated relationship of preferred transmission rate value.
And above method is when used in the second bluetooth equipment；Include the following steps：Receiving what is communicated with this equipment
It is replied after the data packet that bluetooth equipment is sent and receives the bluetooth equipment that long data packet angle value gives the communication of this equipment；Or it is receiving
After the communications test data packet that the bluetooth equipment that communicates with this equipment is sent, reply, which receives test data packet length value and gives, originally to be set
The bluetooth equipment of standby communication.
Further, it further includes and replys response bag step：The bluetooth that this equipment transmission response bag gives the communication of this equipment is set
Standby, the response bag includes following information：Packet type information, packet serial number information, packet check information, packet start information, packet terminate
Information or bag data information.
The present invention also provides a kind of Bluetooth Low Energy communication bluetooth equipment, for other bluetooth devices, including
First communication module, memory module, detection module and sending module；
First communication module is used to establish with other bluetooth equipments and communicate to connect；
Memory module is used to store signal strength values and the correspondence of preferred transmission rate value；
The signal strength values of bluetooth equipment that detection module communicates for detection with this equipment；
Sending module is used to select preferred hair according to the signal strength values to prestore and the correspondence of preferred transmission rate value
Transmission rate value carries out the transmission of data packet using selected preferred transmission rate value.
Further, the first receiving module and correspondence generation module are further included,
The memory module is additionally operable to storage desired transmission rate and communications test data packet；
The sending module is additionally operable to send communications test data packet with the desired transmission rate to prestore；
The length for receiving test data bag that first receiving module returns for the bluetooth equipment that reception communicates with this equipment
Value；
Correspondence generation module is used to multiply desired transmission rate and be removed after the length value for receiving test data bag in logical
The length of letter test data bag is worth to actual transfer rate, and record current signal strength value is corresponding with actual transfer rate to close
It is the correspondence for signal strength values and preferred transmission rate value.
Further, the sending module includes splitting submodule, sends interval time generation submodule, sends submodule
Block；
Submodule is split for data packet averagely to be split into multiple data blocks；
Interval time generation submodule is sent to be used to remove individual data block byte between preferred transmission rate obtains transmission
Every the time；
Sending submodule is used to all be separated by a transmission interval time in the transmission time started for sending adjacent data block,
Until all data blocks are sent.
Further, correspondence correction module is further included；
Then the first receiving module be additionally operable to receive communicate with this equipment bluetooth equipment return receive data packet length；
Correspondence correction module is used for when judging to receive data packet length less than the data packet length that this equipment is sent,
Preferred transmission rate value will be selected to multiply after the length value for receiving data packet except the length in data packet is worth to correction transmission speed
Rate value, then by signal strength values current in correspondence corresponding to preferred transmission rate value replace with correction transmission rate
Value.
Further, selected preferred transmission rate value update module is further included：For when sending module enables, enabling inspection
Module is surveyed, and according to the signal strength values of detection module and the signal strength values to prestore pass corresponding with preferred transmission rate value
System updates and selectes preferred transmission rate value.
And the present invention also provides a kind of Bluetooth Low Energy communication bluetooth equipment, for other bluetooth devices,
Including second communication module, the second receiving module and data packet length value responder module；
Second communication module is used to establish with other bluetooth equipments and communicate to connect；
The data that second receiving module sends for the bluetooth equipment that reception communicates with this equipment；
Long data packet angle value responder module receives data for receiving return after data packet or communications test data packet
The length value for wrapping or receiving test data bag gives the bluetooth equipment of this equipment communication.
And it the present invention also provides a kind of system of Bluetooth Low Energy communication, is set including the first bluetooth equipment and the second bluetooth
The first bluetooth equipment standby, that first bluetooth equipment communicates for above-mentioned Bluetooth Low Energy, second bluetooth equipment
The second bluetooth equipment to communicate for above-mentioned Bluetooth Low Energy.
The prior art is different from, above-mentioned technical proposal has the following advantages that：It is selected according to different signal strength values different
Preferred transmission rate value carry out the transmission of data packet, avoid when signal strength values are too strong, with relatively low rate into line number
The situation of the waste of the communication resource and the time of consumption length are caused according to the transmission of packet, while is also avoided in signal strength values too
When weak, the loss of data packet is caused with higher rate sending data packet, can not normal communication, ultimately cause under traffic rate
The situation of drop.
Description of the drawings
Fig. 1 is the flow chart that the first bluetooth equipment establishes connection；
Fig. 2 is the method flow diagram of the specific embodiment of the invention；
Fig. 3 is the method flow diagram of the first bluetooth equipment automatic adaptation；
Fig. 4 is the method flow diagram that the first bluetooth equipment data packet is sent；
Fig. 5 is the structure diagram of system embodiment.
Reference sign：
1st, the first bluetooth equipment,
10th, the first communication module,
11st, memory module,
12nd, detection module,
13rd, sending module,
130th, submodule is split,
131st, interval time generation submodule is sent,
132nd, sending submodule,
14th, the first receiving module,
15th, correspondence generation module,
16th, preferred transmission rate value update module is selected,
17th, correspondence correction module,
2nd, the second bluetooth equipment,
20th, the second communication module,
21st, the second receiving module,
22nd, long data packet angle value responder module.
Specific embodiment
For the technology contents of technical solution, construction feature, the objects and the effects are described in detail, below in conjunction with specific reality
It applies example and attached drawing is coordinated to be explained in detail.
Please refer to Fig.1 to 5, the present embodiment provides a kind of method of Bluetooth Low Energy communication, for the first bluetooth equipment and
It communicates between second bluetooth equipment.Common bluetooth equipment can be the bands such as earphone, mobile phone, tablet, laptop, POS machine
There are the equipment or attachment of bluetooth communication, since the present embodiment is applied to Bluetooth Low Energy, then bluetooth equipment should will be supported
Bluetooth Low Energy, bluetooth equipment can be Bluetooth Low Energy communication in the first bluetooth equipment or the second bluetooth equipment, this reality
It applies in example using transmission data packet as the first bluetooth equipment.According to the agreement of Bluetooth communication, the data between bluetooth equipment are sent
Should can just be carried out after two bluetooth equipments set up communication connection, then the data sending step of the present embodiment should be sent out
Life is after the first bluetooth equipment and the second bluetooth equipment set up communication connection.Establish connection the step of as shown in Figure 1, first into
Enter step S101：Second bluetooth equipment is set up with unresponsive feature write-in attribute (i.e.
CBCharacteristicPropertyWriteWithoutResponse attributes) characteristic value (Characteristic) clothes
Business is accessed and is carried out data transmission for the first bluetooth equipment.
Above-mentioned middle characteristic value (Characteristic) is used to implement whole communications between bluetooth equipment, and bluetooth equipment leads to
Crossing characteristic value can refer to IOS's or Android to obtain the concept of content feature that either write-in is specified
Characteristic, as long as with above-mentioned Characteristic play identity function all should feature in the present embodiment
In the range of..It then enters step the first bluetooth equipments of S102 to find the second bluetooth equipment and establish connection, obtains the second bluetooth
The characteristic value specified under service and its service that equipment is supported.It then can be to specified in the first bluetooth equipments of step S103
Characteristic value carries out data transmission, and the second bluetooth equipment is obtained by specified characteristic value in the data of the first bluetooth equipment transmission
Hold.
Two above bluetooth equipment establish connection after, the first bluetooth equipment when carrying out data packet transmission, as shown in Fig. 2,
First in step S201：First bluetooth equipment detects current signal strength values (the Received Signal of the second bluetooth equipment
Strength Indication, abbreviation RSSI), signal strength values can significantly embody current first bluetooth equipment and second
The health status of channel between bluetooth equipment if signal strength values are larger, shows that the second bluetooth equipment and the first bluetooth are set
It is standby to have been built up more unobstructed connection.Then the first bluetooth equipments of step S202 according to the signal strength values to prestore with it is excellent
The correspondence for publishing transmission rate value is selected preferred transmission rate value and is used in the first bluetooth equipments of step S203 selected excellent
Publish the transmission that transmission rate value carries out data packet.
Wherein, the signal strength values to prestore and the correspondence of preferred transmission rate value can be that there are the first bluetooth equipments
One piece of data in memory module, this segment data can be the direct corresponding datas of signal strength values and preferred transmission rate value,
Such as signal strength A corresponding speed A1, signal strength B corresponding speeds B1 or signal strength values and the meter of preferred transmission rate value
Calculation relationship illustrates calculated relationship with a simply example below：If signal strength X corresponds to 5 times of rate Y, then signal is known
Directly multiply during intensity value and can obtain preferred transmission rate value in 5, can be greatly reduced shared by correspondence using correspondence
Memory space.During concrete application, two kinds of situations can also be combined, be used in a certain section of signal strength values direct
Corresponding data, in other segment signal intensity value using calculated relationship, then correspondence can be caused more again by saving space
It tallies with the actual situation, avoids calculated relationship that from can not accurately covering all signal strength values.
Data packet can be split into small data block (i.e. small data by the first bluetooth equipment when sending larger data packet
Packet) it is cycled through.When aforesaid way connects, data block is sent is written sending method for unresponsive feature.The present embodiment
In do not limit the form of preferred transmission rate value, if rate value can send byte number and the ratio or hair of sending time
The reciprocal value of the time interval of data block is sent, as long as the first bluetooth equipment can be in unlike signal intensity value using different speed
Rate is sent.More than the first bluetooth equipment after transmission data block and be not to wait for the reply of the second bluetooth equipment, and
Data packet all data blocks are waited for after being sent and being replied.
After above example, avoided the occurrence of the first bluetooth equipment under current signal strength with excessively high rate or
The too low rate of person carries out the transmission of data packet.The second bluetooth equipment has little time to receive when excessive rate is sent, and can cause serious
Packet loss so that transmitted error rate increase, extend transmission time.Too low rate then directly results in transmission time
Extend.Then using preferable transmission time can be obtained after above-described embodiment, reach faster data packet transmission speed.
In above example, the correspondence of signal strength values and preferred transmission rate value can there are many acquisition modes,
Such as by production firm by test either test to obtain after be stored in the first bluetooth equipment or passed through by the second bluetooth equipment automatic
Adaptation obtains.Following steps may be used in production firm by way of test：First by the first bluetooth equipment to be measured and to be measured
First bluetooth equipment to be measured and the second bluetooth equipment to be measured are then established and connected by the second a variety of different distances in bluetooth equipment interval
It connects, then the first bluetooth equipment can obtain a variety of different signal strength values of the second bluetooth equipment, to be measured in each signal strength values
First bluetooth equipment all carries out continual data block transmission, measures most high speed when the first bluetooth equipment to be measured stablizes transmission
Rate records the corresponding flank speed of each signal strength values, then forms signal strength values and preferred transmission rate value
Correspondence, then this correspondence is stored on the first bluetooth equipment.Production firm can also be by testing several letters
Number intensity value is with after preferred transmission rate value, signal strength values and the letter of preferred transmission rate value are obtained according to the methods of trace-point method
Calculated relationship can be then stored on the first bluetooth equipment by number relationship to get to above-mentioned calculated relationship.
The automatic adaptation mode of first bluetooth equipment can be as follows：First the first bluetooth equipments of step S301 with
The desired transmission rate to prestore sends communications test data packet, and desired transmission rate should be that the first bluetooth equipment can be transmitted counting
According to the most fast rate of packet, stable transmission could be only carried out when signal strength is most strong.Then enter step S302
Two bluetooth equipments return to the length value for receiving test data bag to the first bluetooth equipment after receiving communications test data packet, existing
First bluetooth equipment carries out data packet being carried out data block during data packet transmission, then the second bluetooth equipment receives communication test
Data packet should be that the second bluetooth equipment has received all data blocks.Subsequently into the first bluetooth equipments of step S303 by desired transmission
Rate multiplies except the length in communications test data packet is worth to actual transfer rate after the length value for receiving test data bag, most
The first bluetooth equipment is signal strength in the step S304 correspondences for recording current signal strength value and actual transfer rate afterwards
The correspondence of value and preferred transmission rate value.In certain specific embodiments, when the length and communication that receive test data bag
When the length value of test data bag is consistent, then current signal strength value is corresponding with desired transmission rate, and works as and receive test
During half of the length of data packet for the length value of communications test data packet, then current signal strength value and desired transmission rate
Half is corresponding.
By above test, signal strength values are corresponding with preferred transmission rate value can be used to close for the first bluetooth equipment
System carries out the transmission of data packet.Even if it is not stored in signal strength values and preferred transmission rate value in the first bluetooth equipment in advance then
Correspondence, the first bluetooth equipment can also automatic adaptation obtain preferred transmission rate value.For the sake of stabilization, such as Fig. 3
It is shown, can repeat to carry out again after the actual transfer rate that step S301 to S303 plural numbers time obtain is stablized step S304 into
Row record.Such as repeat 3 step S301 to S303, step is carried out if the actual transmissions value that 3 times obtain is all the same
S304, if certain obtained actual transfer rate and last time is inconsistent, using current actual transfer rate as the first time
Re-start the reperformance test of 3 times.
Existing first bluetooth equipment can be there are many fractionation side to the fractionation of data packet in the transmission for carrying out data packet
Formula such as appoints the fractionation that a fixed size is taken to carry out data packet.And in certain embodiments, the first bluetooth equipment uses selected
It is preferred that the transmission that transmission rate value carries out data packet specifically comprises the following steps, as shown in figure 4, the first bluetooth equipment is in step
Data packet is averagely split into multiple data blocks by S401 so that the size of each data block is consistent, convenient for data block
It sends.Then step S402 by individual data block byte remove in selected preferred transmission rate obtain transmission interval time, first
Bluetooth equipment is all separated by a transmission interval time, i.e. the first bluetooth equipment in the transmission time started for sending adjacent data block
Step S403 start send a data block after all start to send again after the interval time to be sent such as step S404 it is next
Data block judges whether to be sent, if the return to step without if until all data blocks are sent in step S405
S403 carries out the transmission of next data block, otherwise can carry out other steps such as step S406 waits for the second bluetooth equipment
Reply.Each data block should be less than the maximum transmission unit value (Maximum of the first bluetooth equipment at this time
Transmission Unit, abbreviation MTU, refer to above a kind of a certain layer of communication protocol can by maximum data packet it is big
It is small), after the MTU for obtaining the second bluetooth equipment in the first bluetooth equipment, can the data block after segmentation be less than or equal to the simultaneously
The MTU of two bluetooth equipments.Such as in a certain specific embodiment, the first bluetooth equipment will send the data packet of 1Mb, and the first bluetooth is set
The standby data block that 1Mb is divided into 50 20Kb, and the flank speed corresponding to signal strength values is 1Mb/S at this time, then
20Kb is removed obtains 20ms transmission interval times in 1Mb/S, then the first bluetooth equipment is sent out again after the waiting 20ms of transmission data block
Send next data block, it is known that all data blocks are sent.
During the first bluetooth equipment and the second bluetooth equipment carry out data packet transmission, meet signal interference or
When the distance of the two changes, then signal strength values can also change, if carried out always using a specific rate
It sends, then this specific rate is not the preferred transmission rate corresponding to signal strength values after changing.In order to solve this problem,
In certain embodiments, further, in the first bluetooth equipment data packet transmission is carried out using selected preferred transmission rate value
In the process, the first bluetooth equipment detects the signal strength values of the second bluetooth equipment, and according to the signal strength values to prestore and preferably
The correspondence of transmission rate value updates and selectes preferred transmission rate value.Wherein, the first bluetooth equipment can carry out in real time or
Being detected and updating for timing, can also be detected and update after one or more data blocks are distributed.Above example
The first bluetooth equipment can reach better laser propagation effect in transmission data packet.
It, can using the preferred transmission rate value in the correspondence to prestore on the relatively poor bluetooth module of certain qualities
In order to solve this problem, in this embodiment, correspondence correction step can be further included there is a situation where data packetloss
Suddenly：After the data packet for receiving the first bluetooth equipment, reply receives data packet length and is set second bluetooth equipment to the first bluetooth
Standby, for the first bluetooth equipment when judging to receive data packet length less than the data packet length that the first bluetooth equipment is sent, first is blue
Tooth equipment will be selected preferred transmission rate value and be multiplied after the length value for receiving data packet except the length in data packet is worth to correction
Transmission rate value, then by signal strength values current in correspondence corresponding to preferred transmission rate value replace with correction transmission
Rate value.In specific application, the first equipment of bluetooth immediately or can also wait for other data packets to be sent completely rear number of retransmissions
Give bluetooth the second equipment according to packet.Then updated correspondence more meets the equipment situation of the first bluetooth equipment, avoids excessively high
It is preferred that the problem of transmission rate value causes to continue packet loss.
In certain embodiments, it further includes and replys the response bag i.e. step S406 of step, as shown in figure 4, the second bluetooth equipment
Response bag is sent to the first bluetooth equipment.Data packet or response bag can include following information：Packet type information, packet serial number letter
Breath, packet check information, packet start information, packet termination message or bag data information, data packet or response bag before transmitting should
This is organized job contract and is made accordingly.The different packet of classification can be distinguished using Packet type information, such as response bag or data packet.Bao Xu
Number information is used for the position of flag data packet, for distinguishing the data packet retransmitted.Packet check information is used for whether verifying package informatin
Correctly, ensure the integrality and accuracy of package informatin, such as even-odd check or length check.Packet start information and packet termination message
It is respectively used to the beginning ending of instruction packet.Bag data information is for preserving the information to be transmitted of response bag, as above mentioned
The length for the data packet that second bluetooth equipment receives.First bluetooth equipment receive the second bluetooth equipment include receive test data
After the response bag of packet length, the first bluetooth equipment parsing bag data information may determine that whether is information that the second bluetooth equipment receives
It is correct, if incorrect or the repeating transmission of data packet can be carried out if the stand-by period is overtime, if can correctly carry out down
The transmission of one data packet.
And the bluetooth equipment the present invention also provides a kind of communication of Bluetooth Low Energy, as shown in figure 5, being in the present embodiment
First bluetooth equipment 1, for other bluetooth devices, for convenience of explanation, other bluetooth equipments are in the present embodiment
Second bluetooth equipment 2, i.e., the bluetooth equipment to communicate with this equipment (the first bluetooth equipment 1) be the second bluetooth equipment 2, the first bluetooth
Equipment 1 is additionally operable to send data to the second bluetooth equipment 2.First bluetooth equipment 1 includes the first communication module 10, memory module
11st, detection module 12 and sending module 13.
Wherein, the first communication module 10 is used to establish with the second bluetooth equipment 2 and communicate to connect, and is bluetooth module.Store mould
Block 11 is used to store signal strength values and the correspondence of preferred transmission rate value, can be hard disk or FLASH.Detection module 12
For detecting the signal strength values of the signal strength values, i.e. bluetooth of the second bluetooth equipment 2.Sending module 13 is used for what basis prestored
Signal strength values and the correspondence of preferred transmission rate value select preferred transmission rate value, use selected preferred transmission rate value
Carry out the transmission of data packet.The sending module 13 of first bluetooth equipment 1 is used when transmission data packet gives the second bluetooth equipment 2
Selected preferred transmission rate value can be sent to avoid using excessively high rate or too low rate, so that sending
Reach best laser propagation effect, reduce transmission time.
In order to enable the first bluetooth equipment 1 can be further included with automatic adaptation to above-mentioned correspondence, the first bluetooth equipment 1
First receiving module 14 and correspondence generation module 15.To achieve these goals, memory module 11 is additionally operable to storage reason
Think transmission rate and communications test data packet, communications test data packet is only used for communication test, and size and form not and are limited,
The packets of audio data of 1Mb such as can be used.Sending module 13 is additionally operable to send communications test data with the desired transmission rate to prestore
Packet.The length value for receiving test data bag that first receiving module 14 returns for the second bluetooth equipment 2 of reception.Correspondence is given birth to
It is used to multiply desired transmission rate into module 15 and be removed after the length value for receiving test data bag in the length of communications test data packet
Angle value obtains actual transfer rate, record the correspondence of current signal strength value and actual transfer rate for signal strength values with
It is preferred that the correspondence of transmission rate value.By the automatic adaptation of the first bluetooth equipment 1, can be pre-deposited without production firm
Correspondence can automatically derive correspondence, avoid the write-in of correspondence and cause the extension of production time, greatly
Fast time to market (TTM).
Sending module 13 fractionation of data packet may be used diversified forms progress, such as divide equally or with a certain fixed size into
Row is split, and in certain embodiments, the sending module 13 of the first bluetooth equipment 1 can pass through following moulds for the transmission of data packet
Block carries out：Sending module includes splitting submodule 130, sends interval time generation submodule 131, sending submodule 132.It splits
For submodule 130 for data packet averagely to be split into multiple data blocks, transmission interval time generation submodule 131 is used for will be single
Data block byte, which is removed, to be obtained sending interval time in preferred transmission rate, and sending submodule 132 is used to send adjacent data
The transmission time started of block is all separated by a transmission interval time, until all data blocks are sent.
When signal strength values change, if carrying out the transmission of data packet, at this time fixed speed using fixed rate
Rate is not the preferred transmission rate value corresponding to signal strength values, then can extend the sending time of data packet.It is asked to solve this
Topic, further, the first bluetooth equipment 1 further includes selected preferred transmission rate value update module 16, selectes preferred transmission rate
Value update module 16 is used for when sending module 13 enables, and enables detection module 12, and according to the signal strength of detection module 12
The signal strength values and the correspondence of preferred transmission rate value for being worth and prestoring, update and select preferred transmission rate value.Update choosing
Sending module 13 is sent using updated value after fixed preferred transmission rate value, and the first bluetooth equipment 1 can be caused to reach
State is preferably sent, has been avoided as much as the decline of transmission rate.
It, can using the preferred transmission rate value in the correspondence to prestore on the relatively poor bluetooth module of certain qualities
Energy can be there is a situation where data packetloss, and in order to solve this problem, in this embodiment, the first bluetooth module further includes correspondence
Relationship correction module 17.Then the first receiving module 14 is additionally operable to receive the data packet length that receives of the second bluetooth equipment return, right
It should be related to that correction module 17 is used for when judging to receive data packet length less than the data packet length that the first bluetooth equipment is sent, the
One bluetooth equipment will be selected preferred transmission rate value and be multiplied after the length value for receiving data packet except the length in data packet is worth to
Correct transmission rate value, then by current signal strength values corresponding to preferred transmission rate value replace with correction transmission rate
Value.
The present invention also provides a kind of bluetooth equipment of Bluetooth Low Energy communication, as shown in figure 5, being second in the present embodiment
Bluetooth equipment 2, for other bluetooth devices, for convenience of explanation, other bluetooth equipments in the present embodiment be first
Bluetooth equipment 1, i.e., the bluetooth equipment to communicate with this equipment (the second bluetooth equipment 2) are the first bluetooth equipment 1.Second bluetooth equipment
2 include second communication module 20, the second receiving module 21 and data packet length value responder module 22.Second communication module 20 is used for
It establishes and communicates to connect with the first bluetooth equipment 1, i.e., Bluetooth Low Energy communicates to connect.Second receiving module 21 is blue for receiving first
The data that tooth equipment is sent.Long data packet angle value responder module 22 is used to after receiving data packet or communications test data packet return
It is recovered to data packet or receives the length value of test data bag to the first bluetooth equipment.Pass through long data packet angle value responder module
22 response, the first bluetooth equipment 1 learn the length for receiving data packet or receiving test data bag of the second bluetooth equipment 2
Degree so that the first bluetooth equipment 1 can in correspondence timing, by the length for receiving data packet of the second bluetooth equipment 2,
The preferred transmission rate value corresponding to current signal strength value is calculated；Or allow the first bluetooth equipment 1 in correspondence
During relationship automatic adaptation, by the length for receiving test data bag of the second bluetooth equipment 2, current signal strength value is calculated
Corresponding preferred transmission rate value.
The present invention also provides a kind of system of Bluetooth Low Energy communication, as shown in figure 5, including the first bluetooth equipment and second
Bluetooth equipment, the first bluetooth equipment 1 that the first bluetooth equipment communicates for above-mentioned Bluetooth Low Energy, the second bluetooth equipment are above-mentioned
Bluetooth Low Energy communication the second bluetooth equipment 2.Wherein the first bluetooth equipment 1 gives the second bluetooth equipment 2 in transmission data packet
When, transmission rate can be adjusted according to the signal strength values of the second bluetooth equipment 2, avoid using too low or excessively high biography
Defeated rate influences the effect of transmission, achievees the purpose that quickly to send.
All or part of step in the method that above-described embodiment is related to can be instructed by program relevant hardware come
It completes, the program can be stored in the storage medium that computer equipment can be read, for performing the various embodiments described above side
All or part of step described in method.The computer equipment, such as：Personal computer, server, the network equipment, intelligent sliding
Dynamic terminal, smart home device, wearable intelligent equipment, vehicle intelligent equipment etc.；The storage medium, such as：RAM、
ROM, magnetic disc, tape, CD, flash memory, USB flash disk, mobile hard disk, storage card, memory stick, webserver storage, network cloud storage
Deng.
The foregoing is merely the embodiment of the present invention, not thereby limit the scope of patent protection of the present invention, every utilization
The equivalent structure or equivalent flow shift that description of the invention and accompanying drawing content are made directly or indirectly is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
1. a kind of method of Bluetooth Low Energy communication, communicates applied between bluetooth equipment, it is characterised in that：Including walking as follows
Suddenly：First bluetooth equipment detects the current signal strength values of the second bluetooth equipment, according to the signal strength values to prestore and preferred hair
The correspondence of transmission rate value selectes preferred transmission rate value, and the transmission of data packet is carried out using selected preferred transmission rate value；
The signal strength values and the correspondence of preferred transmission rate value obtain as follows：
First bluetooth equipment sends communications test data packet with the desired transmission rate to prestore, and the second bluetooth equipment receives communication
It is returned after test data bag and receives the length value of test data bag to the first bluetooth equipment, the first bluetooth equipment is by desired transmission speed
Rate multiplies after the length value for receiving test data bag except the length in communications test data packet is worth to actual transfer rate, then remembers
It is signal strength values and the corresponding pass of preferred transmission rate value that current signal strength value, which is recorded, with the correspondence of actual transfer rate
System；
During first bluetooth equipment carries out data packet transmission using selected preferred transmission rate value, the detection of the first bluetooth equipment
The signal strength values of second bluetooth equipment, and according to the signal strength values that prestore and the correspondence of preferred transmission rate value, more
Newly select preferred transmission rate value.
2. the method for Bluetooth Low Energy communication according to claim 1, it is characterised in that：First bluetooth equipment uses selected
It is preferred that the transmission that transmission rate value carries out data packet specifically comprises the following steps：
Data packet is averagely split into multiple data blocks by the first bluetooth equipment, wherein each data block is both less than or equal to the first indigo plant
The maximum transmission unit value of tooth equipment, and individual data block byte is removed when selected preferred transmission rate obtains sending interval
Between, the first bluetooth equipment is all separated by a transmission interval time, Zhi Daosuo in the transmission time started for sending adjacent data block
There is data block to be sent.
3. the method for Bluetooth Low Energy communication according to claim 1, it is characterised in that：Further include correspondence correction step
Suddenly：After the data packet for receiving the first bluetooth equipment, reply receives data packet length and is set second bluetooth equipment to the first bluetooth
Standby, for the first bluetooth equipment when judging to receive data packet length less than the data packet length that the first bluetooth equipment is sent, first is blue
Tooth equipment will be selected preferred transmission rate value and be multiplied after the length value for receiving data packet except the length in data packet is worth to correction
Transmission rate value, then by signal strength values current in correspondence corresponding to preferred transmission rate value replace with correction transmission
Rate value.
4. the method to be communicated according to Claim 1-3 any one of them Bluetooth Low Energy, it is characterised in that：Further include reply
Response bag step：Second bluetooth equipment sends response bag to the first bluetooth equipment, the data packet or response bag including as follows
Information：Packet type information, packet serial number information, packet check information, packet start information, packet termination message or bag data information.
5. the method to be communicated according to Claim 1-3 any one of them Bluetooth Low Energy, it is characterised in that：The signal is strong
The correspondence of angle value and preferred transmission rate value include signal strength values and preferred transmission rate value direct corresponding data or
Signal strength values and the calculated relationship of preferred transmission rate value.
6. a kind of bluetooth equipment of Bluetooth Low Energy communication, for other bluetooth devices, it is characterised in that：Including first
Communication module, memory module, detection module and sending module；
First communication module is used to establish with other bluetooth equipments and communicate to connect；
Memory module is used to store signal strength values and the correspondence of preferred transmission rate value；
The signal strength values of bluetooth equipment that detection module communicates for detection with this equipment；
Sending module is used to select preferred transmission speed according to the correspondence of the signal strength values to prestore and preferred transmission rate value
Rate value carries out the transmission of data packet using selected preferred transmission rate value；
The first receiving module and correspondence generation module are further included,
The memory module is additionally operable to storage desired transmission rate and communications test data packet；
The sending module is additionally operable to send communications test data packet with the desired transmission rate to prestore；
The length value for receiving test data bag that first receiving module returns for the bluetooth equipment that reception communicates with this equipment；
Correspondence generation module is used to multiply to remove after the length value for receiving test data bag by desired transmission rate to survey in communication
The length of examination data packet is worth to actual transfer rate, and the correspondence for recording current signal strength value and actual transfer rate is
Signal strength values and the correspondence of preferred transmission rate value；
First communication module is additionally operable to during selected preferred transmission rate value is used to carry out data packet transmission, the first communication
Module detects the signal strength values of the first receiving module, and corresponding with preferred transmission rate value according to the signal strength values to prestore
Relationship updates and selectes preferred transmission rate value.
7. the bluetooth equipment of Bluetooth Low Energy communication according to claim 6, it is characterised in that：The sending module includes
It splits submodule, send interval time generation submodule, sending submodule；
Submodule is split for data packet averagely to be split into multiple data blocks；
Interval time generation submodule is sent to be used to remove individual data block byte when preferred transmission rate obtains sending interval
Between；
Sending submodule is used to all be separated by a transmission interval time in the transmission time started for sending adjacent data block, until
All data blocks are sent.
8. the bluetooth equipment of Bluetooth Low Energy communication according to claim 6, it is characterised in that：Further include correspondence school
Positive module；
Then the first receiving module be additionally operable to receive communicate with this equipment bluetooth equipment return receive data packet length；
Correspondence correction module is used to, when judging to receive data packet length less than the data packet length that this equipment is sent, to select
Fixed preferred transmission rate value multiplies except the length in data packet is worth to correction transmission rate value after the length value for receiving data packet,
Then by signal strength values current in correspondence corresponding to preferred transmission rate value replace with correction transmission rate value.
9. a kind of bluetooth equipment of Bluetooth Low Energy communication, for other bluetooth devices, it is characterised in that：Including second
Communication module, the second receiving module and data packet length value responder module；
Second communication module is used to establish with other bluetooth equipments and communicate to connect；
Bluetooth equipment of other the described bluetooth equipments for the Bluetooth Low Energy communication described in any one of claim 6 to 8；
The data that second receiving module sends for the bluetooth equipment that reception communicates with this equipment；
Long data packet angle value responder module for receive return after data packet or communications test data packet receive data packet or
The length value for receiving test data bag gives the bluetooth equipment of this equipment communication.
10. a kind of system of Bluetooth Low Energy communication, including the first bluetooth equipment and the second bluetooth equipment, it is characterised in that：Institute
Bluetooth equipment of the first bluetooth equipment stated for the communication of claim 6 to 8 any one of them Bluetooth Low Energy, described second
Bluetooth equipment of the bluetooth equipment for the Bluetooth Low Energy communication described in claim 9.
Priority Applications (1)
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| CN201410322708.9A CN104135741B (en) | 2014-07-08 | 2014-07-08 | Method, bluetooth equipment and the system of Bluetooth Low Energy communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322708.9A CN104135741B (en) | 2014-07-08 | 2014-07-08 | Method, bluetooth equipment and the system of Bluetooth Low Energy communication |
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| CN104135741B true CN104135741B (en) | 2018-06-19 |
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| KR101970666B1 (en) * | 2016-06-20 | 2019-04-22 | 엘지전자 주식회사 | Air conditioner and communication method of thereof |
| CN106412974A (en) * | 2016-09-23 | 2017-02-15 | 上海华虹集成电路有限责任公司 | Anti-jamming capability testing system for Bluetooth Low Energy (BLE) |
| CN107071697A (en) * | 2017-05-05 | 2017-08-18 | 杭州米越科技有限公司 | A kind of base station data of combination wearing kind equipment is kept in and rapid data synchronization system |
| CN107172639A (en) * | 2017-06-29 | 2017-09-15 | 苏州博联科技有限公司 | A kind of method of testing of low-power consumption bluetooth transmission rate |
| CN107222643A (en) * | 2017-07-25 | 2017-09-29 | 深圳市芯中芯科技有限公司 | A kind of bluetooth equipment firmware upgrade method and system based on software APP technologies |
| CN109391291B (en) * | 2017-08-14 | 2021-08-13 | 瑞昱半导体股份有限公司 | Bluetooth transmission integrated circuit and related transmission method |
| CN110248341A (en) * | 2018-03-08 | 2019-09-17 | 华为技术有限公司 | Transmission rate switching method, bluetooth equipment and computer-readable medium |
| CN108540966B (en) * | 2018-03-16 | 2021-04-06 | 飞天诚信科技股份有限公司 | Bluetooth communication method and communication device |
| CN109151487B (en) * | 2018-09-07 | 2021-01-01 | 视联动力信息技术股份有限公司 | Processing method and device for live multimedia data |
| CN109218302A (en) * | 2018-09-07 | 2019-01-15 | 视联动力信息技术股份有限公司 | A kind of method and apparatus sending view networking data packet |
| CN110505608A (en) * | 2018-09-14 | 2019-11-26 | 深圳市文鼎创数据科技有限公司 | Bluetooth shield supports the method more applied and bluetooth shield |
| CN109275131B (en) * | 2018-09-25 | 2021-08-24 | Oppo广东移动通信有限公司 | Bluetooth communication method and terminal equipment |
| WO2020124611A1 (en) * | 2018-12-22 | 2020-06-25 | 华为技术有限公司 | Rate control method and device |
| CN112640505B (en) * | 2018-12-22 | 2022-04-26 | 华为技术有限公司 | Transmission rate control method and equipment |
| CN110022600B (en) * | 2019-04-09 | 2022-05-06 | 惠州Tcl移动通信有限公司 | Driving current adjusting method and device, storage medium and mobile terminal |
| CN110446193B (en) * | 2019-04-25 | 2020-12-01 | 华为技术有限公司 | Processing method and device of Bluetooth data packet |
| CN110149167B (en) * | 2019-05-05 | 2022-05-13 | Oppo广东移动通信有限公司 | Method and device for dynamically adjusting codes, mobile terminal and storage medium |
| CN111193696B (en) * | 2019-08-01 | 2021-09-07 | 腾讯科技（深圳）有限公司 | Data transmitting method, data receiving method, data transmitting device, data receiving device, computer equipment and storage medium |
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